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SHAKEEL
05/12/2009, 11:04 AM
this morning when my halides cut on i noticed that one of the ballast was humming kinda loud and the bulb wasnt as bright as t he other is this a problem in the making 250 watt pfo ballast with blue life sps bulbs

der_wille_zur_macht
05/12/2009, 11:12 AM
Did it last very long?

Many MH bulb/ballast combos take a few minutes to light and warm up. I wouldn't worry about it unless it lasted more than a few minutes.

SHAKEEL
05/12/2009, 11:19 AM
yes its still humming and isnt bright as the other bulb yet

thegrun
05/12/2009, 11:31 AM
It could be the bulb or the ballast (I’m sure you knew this). If your lights are the same, try switching the two bulbs and see if the humming comes from the other ballast (bad bulb) or the same ballast (bad ballast). Remember to never touch the bulb with your fingers, the oil on your hands cause the bulb to break.

SHAKEEL
05/12/2009, 01:17 PM
i switched the bulbs around and it doing the same thing to the other bulb too you know the sound a ballast makes when firing the bulb thats the sound its making all the time.

returnofsid
05/12/2009, 02:03 PM
Sounds like you've got a ballast that's about to go out on you.

snorvich
05/12/2009, 03:56 PM
<a href=showthread.php?s=&postid=14998184#post14998184 target=_blank>Originally posted</a> by returnofsid
Sounds like you've got a ballast that's about to go out on you.

Yup. Probably a magnetic ballast?

SHAKEEL
05/12/2009, 04:56 PM
Yes they are the lfs where i got them from the guy said i can bring them back for repair what would yal do